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5 Volt to 3.3 Volt DC/DC Converter Custom Design Example

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This 1" x 1" DC/DC converter was custom designed to meet the customer's cost requirement in high volume. The ripple can be reduced without increasing the size, but the cost will increase slightly.

Bottom view of DC/DC module
Pin Function
1 On/Off Control
2 + Output
3 – Output (return)
4 – Input (return)
5 + Input
Detailed Specifications:        
Input Voltage 4.0 – 6.0 Volts    
Input Current 40 – 2350 mA    
Output VOUT     3.3 Volts
Output IOUT     3.0 Amps
Ripple/Noise   125 mV P–P Max    
Line Regulation   ± 0.2 %    
Load Regulation   ± 0.2 %    
Efficiency     87 %  
Operating Temperature 40 to 70 C      
(no derating)        
Mechanical        
Size 1.00 x 1.00 x 0.50 inches      
  25.4 x 25.4 x 12.7 mm NOMINAL      
Pin diameter 0.04 ± .002 inches      
Pin length   0.2 ± .005 inches  
Pin Material   Brass 360, ½ hard  
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